$F7-$F8/247-248: RS232 Input Buffer Pointer
Used by pucrunch: Bit-Stream, Escape Code
Used by ByteBoiler: Depacker
Kernal-Reference:
LDA ($F7),Y : $F096
STA ($F7),Y : $EFB1
STX $F7 : $F472
LDA $F8 : $F2B5 $F46B
STA $F8 : $F2C1
STY $F8 : $F470
Previous Page / Next Page